Why can't Wei Zi Master app work?

System problems. APP is the abbreviation of Application, which means "application". Simply speaking, it is mobile phone software, which mainly refers to the software installed on smart phones. According to the official website, the Wei Zi Master application could not be downloaded due to system problems. At present, APP is not only an application on mobile phones, but also TV terminals, Qunhui and other devices. Moreover, Huawei's HarmonyOS system will also appear in the mobile phone system, and the HarmonyOS system has been used on Huawei's smart screen with outstanding performance.